How to use sessionStorage in js? Basic usage of sessionStorage

The content of this article is to introduce how to use sessionStorage in js? Basic usage of sessionStorage. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

sessionStorage is one of the browser data storage methods. It is used to temporarily save the data of the same window. After closing the window, the sessionStorage data will not exist. It is stored in the form of key value pairs.

Basic usage

Save value

sessionStorage.test="1212";

Get value

var test=sessionStorage.test;

Delete

sessionStorage.removeItem("test");

Remember to delete directly

sessionStorage.test=undefined

The last sessionStorage.test will be equal to "undefined" and will not achieve the effect of deletion

Clear Data Clear the data stored in the current session

sessionStorage.clear();

Total number of sessionStorage

sessionStorage.length

Traverse sessionStorage

for(var i=0;i<sessionStorage.length;i++){  
    var key=sessionStorage.key(i);   
    var value=sessionStorage[key];
}

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